Oh yes....tricks of the trade.
Found it very interesting when a kid growing up on a farm/ranch the first time I watched one of the big 4x4 tractor tires changed. Had to have the fluid pumped out of it, rubber swapped, then refilled.
Reason became clear years later, when I understood why, but as a kid we thought it was cool to walk by and give that valve stem a little push and watch the chloride spray out
'81 CJ5 Base, 258 I6, MC2100, T176 4 spd, 300 TC, D30 Front NT, 3.31, 2-Piece AMC 20 rear NT, 3.31, 4" high arc spring lift
'84 Grand Wagoneer, 401 V8 (.030 over), MC2150 HA Comp, 727 auto, Selec-trac NP229, AMC 20 REAR - D44 FRONT - WT 3.31, 4" high arc spring lift
Rather be driving, than waiting to be modified